Electrochemical Performance of Activated Graphene-Based Materials for Electrodes of Double-Layer Supercapacitors

Y. Quintero, S. Herrera, Z. Zapata-Benabithe, A. Manzano-Ramírez, L. Cruz

Research output: Contribution to journalArticle in an indexed scientific journalpeer-review

Abstract

Activated graphene oxide seems to be a promising electrode material for electrochemical double-layer capacitors, also known as supercapacitors or ultracapacitors, and other energy storage purposes. This article summarizes the results of our research about the effect of graphene oxide KOH-catalyzed activation on their specific surface area (SSA) and their capacitance, both strongly related to their electrochemical performance. KOH-catalyzed activation increased the SSA values of the reduced graphene oxide (rGO) from ∼783 m2 g−1 to ∼2144 m2 g−1; it is important to note that the SSA and oxygen-containing groups are two important factors determining electrochemical performance. Moreover, the highest capacitance value was 50.08 F g−1, using 1.0 M H2SO4 as an aqueous electrolyte. Activated graphene-based materials with high SSA support conductive networks decorated with oxygen groups synergistically improve charge storage capability in EDLCs.

Original languageEnglish
Article number041001
JournalECS Advances
Volume2
Issue number4
DOIs
StatePublished - 1 Dec 2023

Bibliographical note

Publisher Copyright:
© 2023 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited.

Keywords

  • electrochemical double-layer capacitors (EDLCs)
  • energy storage
  • KOH-catalyzed activation
  • reduced graphene oxide (rGO)

Types Minciencias

  • Artículos de investigación con calidad D

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